Annex VI of NR-16 – Hazardous Activities and Operations with Ionizing Radiation or Radioactive Substances

(MTE Ordinance No. 518, of April 4, 2003)


1. Production, use, processing, transport, storage, handling of radioactive materials, sealed and unsealed, of any physical state and chemical form, natural or artificial, including:Mines and deposits of radioactive materials. Plant pilots and mills for radioactive minerals. Other areas subject to potential risk due to ionizing radiation.
1.1 Prospecting, mining, operation, beneficiation, and processing of radioactive minerals.Leaching of radioactive minerals for uranium and thorium concentrate production. Purification of concentrates and conversion into other forms for nuclear fuel use.
1.2 Production, transformation, and treatment of nuclear materials for the nuclear fuel cycle.Production of uranium fluorides for hexafluoride and uranium metal production. Isotopic enrichment and reconversion facilities. Nuclear fuel element manufacturing. Facilities for storing used fuel elements. Facilities for reprocessing irradiated fuel. Facilities for the treatment and final disposal of natural and artificial radioactive waste.
1.3 Production of radioisotopes for use in medicine, agriculture, livestock, scientific and technological research.Laboratories for radioisotope production and labeled molecules.
1.4 Production of Radioactive SourcesFacilities for radioactive material treatment and source manufacturing. Laboratories for testing, inspections, and calibration of sources, detectors, and radiation monitors with radioactive sources.
1.5 Testing, inspections, and calibration of detectors and radiation monitors with radiation sources.Testing laboratories for radioactive materials. Radiochemistry laboratories.
1.6 Decontamination of surfaces, instruments, machines, tools, laboratory utensils, clothing, and any other areas or durable goods contaminated with radioactive material.Laboratories for decontamination of parts and radioactive materials. Collection of radioactive waste in facilities, buildings, and open areas. Laundry for contaminated clothes. Transport of radioactive materials and waste, conditioning, storage, and disposal.
1.7 Isotopic separation and radiochemical processing.Facilities for treatment, conditioning, containment, stabilization, storage, and disposal of radioactive waste. Facilities for retaining radioactive waste.
1.8 Handling, conditioning, release, monitoring, stabilization, inspection, retention, and disposal of radioactive waste.Waste sites. Facilities for storing radioactive products for later use.
2. Operation and maintenance activities of nuclear reactors, including:Reactor buildings. Fuel storage buildings.
2.1 Assembly, installation, replacement, and inspection of fuel elements.Facilities for treatment and storage of radioactive waste.
2.2 Maintenance of components of the reactor and hydraulic, mechanical, and electrical systems, irradiated, contaminated, or located in radiation areas.Facilities for water treatment and reactors and separation and containment of radioactive products. Reactor operation rooms. Effluent sampling rooms.
2.3 Handling of irradiated samples.Laboratories for radioactive measurements.
2.4 Experiments using irradiation channels.Other areas subject to potential risk from ionizing radiation, susceptible to being affected by the dispersion of volatile products.
2.5 Radiation measurement, data collection of radiological and nuclear information, testing, inspections, supervision of technical work.Semi-hot and hot laboratories. Uranium and thorium mines. Deposits of radioactive minerals and products from radioactive mineral treatment.
2.6 Segregation, handling, treatment, conditioning, and storage of radioactive waste.Collection of radioactive materials and parts, materials contaminated with radioisotopes, and radioactive waters.
3. Operation and maintenance activities of particle accelerators, including:Target irradiation areas.
3.1 Assembly, installation, replacement, and maintenance of irradiated or contaminated components.Workshops for maintenance of irradiated or contaminated components. Accelerator operation rooms.
3.2 Processing of irradiated targets.Laboratories for target treatment and separation of radioisotopes.
3.3 Experiments with particle beams.Radiation testing and nuclear measurements laboratories.
3.4 Radiation measurement, radiological and nuclear data collection, testing, inspections, and supervision of technical work.Facilities for treatment and storage of radioactive waste.
3.5 Segregation, handling, treatment, conditioning, and storage of radioactive waste.Laboratories for processing irradiated targets.
4. Operation activities with X-ray devices, gamma radiation irradiators, beta radiation, or neutron radiation, including:Irradiation rooms and operation rooms of X-ray devices and gamma, beta, or neutron irradiators.
4.1 Medical and dental diagnosis.Testing, inspections, and calibration laboratories with the described radiation sources.
4.2 Radiotherapy.
4.3 Industrial radiography, gamma radiography, and neutron radiography.Handling of sources.
4.4 Material analysis by diffractometry.Handling of equipment.
4.5 Testing, inspections, and calibration of detectors and radiation monitors.Handling of radioactive samples.
4.6 Food irradiation.Handling of sources and facilities for food irradiation.
4.7 Stabilization of medical-hospital instruments.Handling of sources and facilities for operation.
4.8 Irradiation of mineral and biological specimens.Handling of irradiated samples.
4.9 Radiation measurement, radiological data collection, testing, inspections, supervision of technical work.Laboratories for testing and calibration of sources and radioactive materials.
5. Nuclear medicine activities.Diagnosis and therapy rooms with nuclear medicine.
5.1 Handling and application of radioisotopes for medical diagnosis and therapy.Infirmary of patients under radioisotope treatment.
5.2 Handling of sealed sources for brachytherapy applications.Area for treatment and storage of radioactive waste.
5.3 Collection of biological data from patients with incorporated radioisotopes.Handling of biological materials containing radioisotopes or labeled molecules.
5.4 Segregation, handling, treatment, conditioning, and storage of radioactive waste.Laboratories for decontamination and collection of radioactive waste.
6. Decommissioning of nuclear and radioactive facilities, including:Contaminated nuclear and radioactive facility areas with waste.
6.1 All inherent radioactive decontamination.Temporary and permanent radioactive waste deposits.
6.2 Management of existing radioactive waste, including treatment and conditioning of liquid, solid, gaseous, and aerosol waste; transport and disposal of the same.Facilities for containment of radioactive waste. Facilities for asphalt paving of radioactive waste. Facilities for cementation of radioactive waste.
7. Decommissioning of mines, mills, and treatment plants for radioactive minerals.Treatment of mineral waste. Repository of natural waste (containment basin for radium and other radioisotopes). Mining waste deposition.

Explanatory Note: (Inserted by MTE Ordinance No. 595, of May 7, 2015)

1. Activities carried out in areas using mobile X-ray equipment for medical diagnosis are not considered hazardous for the purposes of this annex.

2. Areas such as emergency rooms, intensive care units, recovery rooms, and hospital beds are not classified as irradiation rooms due to the use of mobile X-ray equipment.

    (*) Annex added by Ordinance No. 3,393, of December 17, 1987.